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13544554540 = 2251161566157
BaseRepresentation
bin11001001110101000…
…11000000000101100
31021221221110122212011
430213110120000230
5210214401221130
610120002451004
7656434546126
oct144724300054
937857418764
1013544554540
115820603330
122760063a64
13137b15671a
14926bdc216
1554416b52a
hex32751802c

13544554540 has 24 divisors (see below), whose sum is σ = 31029343632. Its totient is φ = 4925292480.

The previous prime is 13544554519. The next prime is 13544554589. The reversal of 13544554540 is 4545544531.

It is a super-2 number, since 2×135445545402 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13544554493 and 13544554502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30782859 + ... + 30783298.

It is an arithmetic number, because the mean of its divisors is an integer number (1292889318).

Almost surely, 213544554540 is an apocalyptic number.

13544554540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13544554540 is an abundant number, since it is smaller than the sum of its proper divisors (17484789092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13544554540 is a wasteful number, since it uses less digits than its factorization.

13544554540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61566177 (or 61566175 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 13544554540 in words is "thirteen billion, five hundred forty-four million, five hundred fifty-four thousand, five hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 61566157 123132314 246264628 307830785 615661570 677227727 1231323140 1354455454 2708910908 3386138635 6772277270 13544554540